Patent US5113476A successfully refreshed from Google Patents.
Patent US5035348A successfully refreshed from Google Patents.
US5035348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container having a pressure-rupturable seal for dispensing contents
Assignee: Institute Guilfoyle
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Filing: 1989-09-01
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Granted: 1991-07-30
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Expires: 2009-09-01
Abstract
Abstract A flexible fluid dispenser includes a flexible fluid-containing vessel which has a seal which seals a top wall of the vessel to a bottom wall and is shaped to concentrate in a region thereof forces resulting from pressure generated by applying a force to the dispenser. When the resulting force is sufficiently large, the weaker top or bottom wall of the vessel breaks, or opens, at the concentration region of the seal. The opening has dimensions which approximate the dimensions of the force-concentrating region of the seal.
Inventors
- 👤 Robert P. Seifert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:14
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/52; B65D75/58; B65D75/40; B65D75/44; B65D75/48; G; G01; G01N; G01N1/00; G01N1/02; G01N2001/028
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
101 words
A fluid dispenser, the dispenser including a flexible vessel for containing a fluid, the vessel including i. a top wall and a bottom wall, and ii. means comprising a seal concentrating in a region thereof forces resulting from pressure generated in the fluid by applying a force to the vessel, said seal sealing the top wall to the bottom wall, said vessel being sufficiently strong that a weaker of the top wall or the bottom wall at the seal ruptures at the region of concentration in response to the applied force to form an opening through which the fluid is dispensed.
Claim 2
Dependent Claim
101 words
A fluid dispenser, the dispenser including a flexible vessel for containing a fluid, the vessel including i. a top wall and a bottom wall, and ii. means comprising a seal concentrating in a region thereof forces resulting from pressure generated in the fluid by applying a force to the vessel, said seal sealing the top wall to the bottom wall, said vessel being sufficiently strong that a weaker of the top wall or the bottom wall at the seal ruptures at the region of concentration in response to the applied force to form an opening through which the fluid is dispensed.
Claim 3
Dependent Claim
31 words
The fluid dispenser of claim 1, wherein the seal is V-shaped with its apex pointing toward the center of the vessel, the apex of the seal being the region of concentration.
Claim 4
Dependent Claim
42 words
The fluid dispenser of claim 1, wherein the seal is a circular seal with a periphery which is smaller than the diameter of the vessel at the location of the seal, the edge of the circular seal being the region of concentration.
Claim 5
Dependent Claim
50 words
The fluid dispenser of claim 1, wherein the seal is a heat seal which is formed by applying heat to one of the top or bottom walls of the vessel, the wall to which the heat is applied opening at the region of concentration in response to the applied force.
Claim 6
Dependent Claim
48 words
The fluid dispenser of claim 1, wherein the dispenser further includes a fluid-absorbing applicator for topically applying the contents of the vessel to a surface, the applicator being situated so as to absorb the contents of the vessel as they flow through the opening in the vessel wall.
Claim 7
Dependent Claim
49 words
The fluid dispenser of claim 5, wherein the seal is a heat seal which is formed by applying heat to one of the top or bottom walls of the vessel and the wall to which the heat is applied opens at the apex in response to the applied force.
Claim 8
Dependent Claim
93 words
A fluid dispenser, the dispenser including a flexible vessel for containing a fluid, the vessel having a seal sealing a top wall to a bottom wall, the seal being V-shaped to concentrate at the apex of the seal forces resulting from pressure generated in the fluid by applying a force to the vessel, and the seal being sufficiently strong that a weaker of the top wall or the bottom wall at the seal ruptures at the apex in response to the applied force to form an opening through which the fluid is dispensed.
Claim 9
Dependent Claim
93 words
A fluid dispenser, the dispenser including a flexible vessel for containing a fluid, the vessel having a seal sealing a top wall to a bottom wall, the seal being V-shaped to concentrate at the apex of the seal forces resulting from pressure generated in the fluid by applying a force to the vessel, and the seal being sufficiently strong that a weaker of the top wall or the bottom wall at the seal ruptures at the apex in response to the applied force to form an opening through which the fluid is dispensed.
References Cited (Backward Citations)
US2430995A
Cited
US2663461A
Cited
US3334790A
Cited
US3601252A
Cited
US3757782A
Cited
US3964604A
Cited
US3913789A
Cited
EP0078761A2
Cited
US4759472A
Cited
US4890744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-29 | 1995-01-28 | 1995-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-29 | 1999-01-28 | 1999-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-29 | 2003-01-28 | 2003-07-30 | $7700.00 | Window Closed / Lapsed |